1
22
23 package com.liferay.portal.kernel.servlet;
24
25 import java.io.Serializable;
26
27 import java.util.HashMap;
28 import java.util.HashSet;
29 import java.util.Iterator;
30 import java.util.Map;
31 import java.util.Set;
32
33 import javax.servlet.http.HttpSession;
34 import javax.servlet.http.HttpSessionBindingEvent;
35 import javax.servlet.http.HttpSessionBindingListener;
36
37
46 public class PortletSessionTracker
47 implements HttpSessionBindingListener, Serializable {
48
49 public static void add(HttpSession session) {
50 _instance._add(session);
51 }
52
53 public static HttpSessionBindingListener getInstance() {
54 return _instance;
55 }
56
57 public static void invalidate(String sessionId) {
58 _instance._invalidate(sessionId);
59 }
60
61 public void valueBound(HttpSessionBindingEvent event) {
62 }
63
64 public void valueUnbound(HttpSessionBindingEvent event) {
65 invalidate(event.getSession().getId());
66 }
67
68 private PortletSessionTracker() {
69 _sessions = new HashMap<String, Set<HttpSession>>();
70 }
71
72 private void _add(HttpSession session) {
73 String sessionId = session.getId();
74
75 synchronized (_sessions) {
76 Set<HttpSession> portletSessions = _sessions.get(sessionId);
77
78 if (portletSessions == null) {
79 portletSessions = new HashSet<HttpSession>();
80
81 _sessions.put(sessionId, portletSessions);
82 }
83
84 portletSessions.add(session);
85 }
86 }
87
88 private void _invalidate(String sessionId) {
89 synchronized (_sessions) {
90 Set<HttpSession> portletSessions = _sessions.get(sessionId);
91
92 if (portletSessions != null) {
93 Iterator<HttpSession> itr = portletSessions.iterator();
94
95 while (itr.hasNext()) {
96 HttpSession session = itr.next();
97
98 try {
99 session.invalidate();
100 }
101 catch (Exception e) {
102 }
103 }
104 }
105
106 _sessions.remove(sessionId);
107 }
108 }
109
110 private static PortletSessionTracker _instance =
111 new PortletSessionTracker();
112
113 private transient Map<String, Set<HttpSession>> _sessions;
114
115 }